Telecentric system for defect detection on flat transparent materials

The special optical design ensures that only the light rays deflected by an object’s edge are imaged on the sensor: edges are automatically extracted without the need of software algorithms.
This technique allows the detection of extremely tiny defects, particles and surface discontinuities that would be impossible to see with traditional lens systems.
This approach is also suitable for OCR/OCV applications on clear glass, plastic films etc.

Technical documents

Working principle: when light rays encounter an object they get scattered from its edges.
The TCEDGEVIS optical system filters these rays to form an image of the object’s profile
with much higher contrast than traditional optical methods